Coal Tar Systems

American Roofing Systems is, unarguably, the leader in offering coal tar-based products to the roofing industry.  Coal tar has a long history of very impressive performance under the harshest of conditions.  There are, in fact, some coal tar roofs that have been in service for over a century.

Coal tar has a particular chemical structure which is highly resistant to moisture, chemical and UV attack as well as mold and algae. Dr. Kenneth Brzozowski, Ph. D. is one of American Roofing Systems' owners and Chief Technical Officer, and has had significant experience in coal tar chemistry, along with an intimate knowledge of its performance characteristics and roofing service.  He holds several patents in the area of coal tar products and applications.

Please request Technical Data Sheets coal tar products American Roofing Systems offers.  These products fall into the general categories of hot-applied materials, coatings and mastics.  Of course, the best known application of coal tar is in the construction of hot applied roofs.  We offer standard coal tar, but also can provide a modified product that contains polymers which greatly improve the properties of low temperature performance, sag resistance, flexibility and adhesion, to name a few.  This product was invented by Ken and has become a staple in the roofing industry.

The coatings come in water-based and solvent-based formulations and can be used on both coal tar and asphalt-based roofing systems.  It is a fallacy that coal tar and asphalt cannot be used in conjunction with each other.  A knowledge of how to use them together to obtain maximum performance is necessary and the results are highly desirable.

The mastics and sealers available are also unique and long-lasting and provide many benefits.

Please do not hesitate to call or e-mail if any questions come to mind.  American Roofing Systems is convinced of the superior performance of coal tar and, you will find, is a well-regarded source of products and information on this bitumen material.